The casserole dish an integral part of American cuisine. Many recipes baked in a casserole evoke feelings of nostalgia and comfort, such as macaroni and cheese, sweet potato casserole with marshmallows and creamy chicken with broccoli and rice. Many casseroles are one-dish meals, combining protein, grains, vegetables and dairy. Often, the recipe calls for a crunchy topping like breadcrumbs, baked cheese or crispy onions. Usually, the meal can be cooked and served in the same dish, making clean-up a breeze. This convenient cooking method is popular in homes all across the country.